He's a pretty good receiver actually. giving him a few pitches or screens or reverses is all you need on top of return duties. Let him run a fly route every now and then, defenses will still have to respect his speed.
I look at it a bit differently. I see him run screens, but not too much past that. I agree his speed alone is something that the D has to account for, but at the end of the day he's not going to be able to run a full route tree.
When looking at a RB that can do that I think of Forte or Sproles. Many times they are split out wide and it's not that they are always faster than the guy covering them, but they can actually do many things while they are out there. From the Kent State games I saw (maybe 3) the only time he lined up wide was to get a bubble screen. Forte can be split out on his own and run a slant, in, hook or a go route. His speed isn't what makes him deadly, but more his versitility as a reciever when being split out wide.
There's no denying his speed, but when I'm watching him I'm seeing nothing but speed and that worries me. Looking at his
game logs who has he really played? He's played at a low level in college and has been pretty much a one trick pony. For him he'd be trying to make plays against the fastest, biggest compeitition he's ever faced and and as a league they have seen guys of equal speed and have a plan to deal with him.